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Using air and hydrostatic pressure to store energy underwater

Consisting of a land-based mechanical facility and underwater pipelines and accumulators, the underwater compressed-air energy-storage (UCAES) system from Hydrostor Inc. (Toronto, Ont., Canada; www.hydrostor.ca) takes electricity (potentially excess solar or wind energy) and uses it to run a compressor, which…

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Oil-free compressed air at a fraction of the cost

The recently commercialized high-speed turbo (HST) compressors from BOGE Kompressoren Otto Boge GmbH & Co. KG (BOGE; Bielefield, Germany; www.boge.de) produce 100% oil-free (Class 0) compressed air at the highest degree of efficiency and with minimal maintenance effort, according to…

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Polymer-reaction monitoring

There are many critical parameters that are important to monitor and measure in industrial polymer reactions, including molecular weight, viscosity and residual monomer concentration. Typically, polymer reactions are characterized offline and intermittently in a quality-control laboratory, or via inferential models…

Chementator Briefs

PET recycling Polyethylene terephthalate (PET) can be quickly depolymerized into virgin monomers using a patented process that was developed, and is being scaled up by Ioniqa Technologies BV (Eindhoven, the Netherlands; www.ioniqa.com). The company recently finalized a multi-million-euro funding round…

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Progress on E.U. project to produce rare earth elements from Greenland

A refinery pilot test was successfully completed on the Kvanefjeld rare-earth (RE) project located in the southern tip of Greenland, about 10 km from Narsaq. The project is wholly owned by Greenland Minerals and Energy Ltd. (Perth, Western Australia; www.ggg.gl).…

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A step forward for bio-based butadiene

Increased use of ethane from shale deposits as a feedstock for ethylene production has focused attention on the growing need for on-purpose production of butadiene, which has traditionally been produced primarily as a byproduct of conventional ethylene production from naphtha.…

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A hybrid solar cell that utilizes waste heat to boost efficiency

Scientists from Yonsei University (Seoul, South Korea; www.yonsei.ac.kr) led by Prof Eunkyoung Kim, have developed a hybrid solar cell to enhance the photo-conversion efficiency of a solar cell with a thermoelectric device operated by photothermally generated heat. The efficiency was…

Dry adhesive technology mimics gecko’s feet

A dry adhesive technology inspired by the microscopic hairs on gecko’s feet is said to be the first of its kind to be commercialized. Known as Setex, the technology was developed by nanoGriptech Inc. (Pittsburgh, Pa.; www.nanogriptech.com), a company spun…

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Slash costs with this advanced sulfuric-acid alkylation process

Alkylate — the main component in high-octane gasoline — is produced by catalytic reaction of C3–C5 olefins with isobutane in the presence of strong acid catalyst. Although there has been progress in the use of solid-acid catalysts (see, for example,…

Making hydrogen (and carbon) by cracking methane in molten metal

A process that converts methane into hydrogen and carbon black has been developed by researchers at the Institute for Advanced Sustainability Studies (IASS; Potsdam; www.iass-potsdam.de) and the Karlsruhe Institute of Technology (KIT; Karlsruhe, both Germany; www.kit.edu). In a joint project…